On the flip side, a deficiency in the major male sex hormone—a condition that burdens some million American men over the age of 45, according to US census data—is, well, far from sexy. Side effects of “Low-T” include low libido, limp erections, hair thinning, muscle loss, fat gain, depression … In fact, one study found that that the lower a man’s testosterone levels, the higher his risk of death from any cause—heart disease in particular. Adding insult to injury, the Food and Drug Administration says there's little evidence that testosterone drugs are beneficial. ( Did we mention depression? ) The good news is you can boost your testosterone naturally, and diet plays a key role. So grab a pen, jot down a grocery list of these Eat This, Not That! -approved, T-boosting foods and get ready to unleash your hard-wired alpha male.
Wondering about the lack of veggies on this list? That’s because B12 is found almost entirely in animal products; vegetable sources have negligible levels of the nutrient. Sorry, vegetarians, but that extends to regular tofu, which is a good source of protein — but zilch B12. The exception is fortified tofu, such as Nasoya Tofu Plus, which is pumped up with additional nutrients, including B vitamins. A 3-ounce portion also contains 7 grams of muscle-friendly protein. If you’re a vegetarian or vegan whose libido has gone limp, you may want to do a cost-benefit analysis of tofu as a protein source and consume it sparingly, as some studies have shown that it can lower testosterone levels. If you’re concerned, you can always double down on these testosterone-boosting foods .